Products Description
L-tryptophan is an essential amino acid because the body can't make it. It must be acquired from food, such as animal and plant proteins. L-Tryptophan is also a precursor to the neurotransmitter serotonin and the hormone melatonin. People use L-tryptophan for some mental health disorders, to help quit smoking, for athletic performance, and for emotional symptoms in people with premenstrual dysphoric disorder, relax anxiety and depression.
CAS NO.: 73-22-3
Molecular Formula: C11H12N2O2
Molecular Weight: 204.23
Specification
|
Testing Item
|
Standard
|
Result
|
|
Appearance
|
White to light yellow crystal powder
|
conforms
|
|
Assay/%
|
≥98.00
|
99.10
|
|
Specific Rotation
|
-29.0° -32.8°
|
-29.3°
|
|
Residue on Ignition/%
|
≤0.50
|
0.40
|
|
Loss on Drying/%
|
≤0.50
|
0.30
|
|
Heavy Metal(Pb)/%
|
≤5
|
<5
|
|
Arsenic(As)/%
|
≤2
|
conforms
|
|
Mercury(Hg)/%
|
≤0.1
|
conforms
|
|
Cadmium(Cd)/%
|
≤2
|
conforms
|
|
Salmonella
|
Negative in 10g
|
conforms
|
|
PH
|
5.0~7.0
|
conforms
|
|
Amino Acids |
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|
Product name |
Cas No. |
Product name |
Cas No. |
|
1783-96-6 |
516-06-3 |
||
|
107-35-7 |
328-39-2 |
||
|
56-87-1 |
80-68-2 |
||
|
63-68-3 |
59-51-8 |
||
|
72-19-5 |
302-72-7 |
||
|
98-79-3 |
56-40-6 |
||
|
56-89-3 |
56-85-9 |
||
|
60-18-4 |
63-91-2 |
||
|
61-90-5 |
147-85-3 |
||
|
73-32-5 |
5934-29-2 |
||
|
72-18-4 |
71-00-1 |
||
|
372-75-8 |
73-22-3 |
||
|
74-79-3 |
537-55-3 |
||
|
1119-34-2 |
616-91-1 |
||
|
56-86-0 |
6020-87-7 |
||
|
7048-04-6 |
57-00-1 |
||
|
52-89-1 |
56-84-8 |
||
|
52-90-4 |
56-41-7 |
||
|
328-38-1 |
3081-61-6 |
||
|
657-27-2 |
|||
Packing & Delivery
Our Company
Premium Ingredient Co., Ltd has been producing and distributing amino acids, vitamins, nutrition and food additives for decades, severing for more than 100 clients in the fields of food, beverage, diet supplements, cosmetic, pharmaceutical and animal feeding, exporting to dozens of countries. We supply these products only from the first class Chinese factories with over 10 years producing experiences.
With more than 10 years working experience, Premium Ingredient Co., Ltd offers not only quality products, but also good service, quick response, delivery in time, share up-to-the minute market information, supply one-stop-shop solutions.
We have established a long-term, extensive and deep cooperation with the source to ensure sufficient supplies, stable prices, and rapid shipment. Our 3rd party documents include ISO9001, ISO14001, HACCP, HALAL, KOSHER, GMP, FAMI-QS.
We expect you sending email or coming for negotiation.
Our Factory
Our Research
Our Certifications
ISO9001, ISO14001, HALAL, KOSHER, DRUG PRODUCING LISENCE
CERTIFICATE OF ANALYSIS for l-tryptophan feed grade
| PRODUCT NAME: | L-Tryptophan | BATCH NO.: | |
| PACKING: | MFG DATE: | ||
| QUANTITY: | INSPECTION DATE: | 25 | |
| STANDARD: | GB/T25735-2010 | SHELF LIFE: | 2 Years |
| Items | Limits | Test results |
| Description | White to light yellow crystals or crystalline particle | Conforms |
| Assay | 98～101.5% | 98.9% |
| PH | 5.0～7.0 | 5.6 |
| Loss on drying | ≤0.50% | 0.30% |
| Residue on lgnition | ≤0.50% | 0.30% |
Conclusion:Passed test according to the Standard of GB/T25735-2010.
Certificate of Analysis for L-Tryptophan (API grade)
| Product Name | L-Tryptophan | Packing | 25kg/drum | |||
| Batch no. | Report Date | |||||
| QTY | 100kg | EXP | ||||
| Item | Specifications | Results | ||||
| Appearance | White to slightly yellowish-white crystals, crystalline powder | White crystalline powder | ||||
| Identification |
Conform |
Conform |
||||
|
Specific Rotation [α] D 20 |
－30.0°～－33.0° |
－30.9° |
||||
|
Clarity of Solution |
Conform |
Conform |
||||
| Chloride(Cl) | ≤0.02% | ＜0.02% | ||||
| Sulfate(SO 4 ) | ≤0.03% | ＜0.03% | ||||
| Ammonium(NH 4 ) | ≤0.02% | ＜0.02% | ||||
| Heavy metals(Pb) | ≤10ppm | ＜10ppm | ||||
| Irom(Fe) | ≤20ppm | ＜20ppm | ||||
|
Impurity A and other related substances |
Impurity A:≤10ppm sum of impurities with a retention time less than that of tryptophan :≤ 100ppm sum of impurities with a retention time greater than that of tryptophan and up to 1.8 times the retention time of N-acetyltryptophan:≤300ppm |
Conform |
||||
| Endotoxin | ≤12EU/G | ＜12EU/G | ||||
| Loss on drying | ≤0.5% | 0.04% | ||||
|
Residue on Ignition |
≤0.1% |
0.05% |
||||
| Conclusion:This Batch Is Conforming With The Standard Of EP10.0. | ||||||
| Product Name: | L-Tryptophan | Standard : | AJI92 | ||
| Lot No.: | 20090701 | Packing: | 25kg/Drum | ||
| Manu. Date: | July 4, 2009 | Expire Date: | July 3, 2011 | ||
| Item | Specification | Result | |||
| Specific Rotation[a]D25 | -29.4° to -32.8° | -31.4° | |||
| pH | 5.5 to 7.0 | 5.8 | |||
| State of solution | 95.0% Min | 96.5% | |||
| Chloride (Cl) | 0.05% Max | <0.05% | |||
| Ammonium (NH4) | 0.02% Max | <0.02% | |||
| Sulfate (SO4) | 0.03% Max | <0.03% | |||
| Other amino acids | 0.5% Max | <0.5% | |||
| Loss on drying | 0.3% Max | 0.1% | |||
| Residue on ignition | 0.1% Max | <0.08% | |||
| Heavy Metals(Pb) | 0.0015% Max | <0.001% | |||
| Arsenic (As2O3) | 0.0001% Max | <0.0001% | |||
|
Organic volatile impurities |
Meet the requirements | Meet the requirements | |||
| Assay | 98.5% Min | 99.4% | |||
Conclusion: Conforms to the specification of AJI92
FAQ
Q: How long is your delivery time?
A: Generally it is 1-2 weeks..
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What's your MOQ ?
A: For the high value product, our MOQ starts from 25kg.
Q: Is there a discount ?
A: Yes, for larger quantity, we always support with better price.
Q: How to confirm the Product Quality before placing orders ?
A: Our products conforms to the internation standard, such as USP, CP, FCC. We can also send you the samples for test. After you confirmed the samples, we will move to the next step for cooperation.
Q: How to start orders or make payments ?
A: You can send our your Purchase order ( if your company has ), or just send a simple confirmation by email or by Trade Manager, and we will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly.
Q: How do you treat quality complaint ?
A: We tested each batch before delivery and only qualified product will be delivery, in case you find any problem about the quality when you received and tested, send email to us, and enclose the photo of the products and 3rd party test reports, We negotiate to resolve these issues, recall or exchange goods, or compensate.
Q: why we choose you ?
A : We ensure ingredient purity, on-time delivery, process efficiency and the technical documents you require.
(1) quality: meet even exceed what you expect.
(2) prices: competitive
(3) service: one stop shop solution, respond soon, delivery fast, share the market information, share the new application of the product.
Our products are sold all over the world, you can rest assured.
